The next generation fighter aircraft will be equipped with nonaxisymmetric multifunction jet engine exhaust systems. The circular-to-rectangular transition duct employed in these systems has been made longer with the objective to maintain uniform flow. The weight of the exhaust system increases with increasing nozzle aspect ratio. The new design is to provide enhanced maneuvering and STOL performance. It is attempted to reduce the increase in weight as much as possible by new design strategies. The present paper has the objective to show through experimental data that the current design guidelines for transition ducts can be expanded so that shorter transitions are possible thereby reducing the nonaxisymmetric exhaust system weight penalty.
Circular-to-rectangular transition ducts for high-aspect ratio nonaxisymmetric nozzles
1985-07-01
Conference paper
No indication
English
Performance Improvement for Nonaxisymmetric Nozzles
NTRS | 1985
|Computational Investigation of Circular-to-Rectangular Transition Ducts
Online Contents | 1994
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